"When you have earned at least 750 reputation, you will receive the “approve tag wiki edits” privilege and will be allowed to view this page."
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Steven JeurisJan 19 '12 at 22:17

@StevenJeuris well there you have it. 500 to approve edits. 750 to see all current pending edits. Of course you could just start clicking all the questions to see any pending edits >.<
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phwdJan 19 '12 at 22:19